From: "glen herrmannsfeldt" <g...@ugcs.caltech.edu>
Sent: Saturday, November 15, 2014 3:31 AM
Gary wrote:
I have heard that only one machine was ever delivered without the
decimal set, but it may have just been rumour.
All the 360/91's were delivered without the decimal instructions.
The OS emulates them when the illegal instruction exception is
generated.
But maybe you meant only on machines where decimal was in option.
The 360/20 has the decimal instructions except for SRP,
SRP wasn't designed then.
